Atoms and Stoichemistry

Question 1

What are the two rules for alpha decay (conservation of mass)?

Answer 1

1. Nucleons - no. of protons and neutrons should stay same
2. Total charge should be same for before and after decay

Question 2

What are the different particles that play role in decay?

Answer 2

Alpha: α (mass 4, charge 2) basically He
Beta: β (mass 0, charge -1) basically electron
Positron: β (mass 0, charge +1)
Proton: P (mass 1, charge 1)
Neuton: n (mass 1, charge 0)
Gamma: g (mass 0, charge 0)

Question 3

What’s diamagnetic atom?

Answer 3

Diamagnetic atom has every electron in pair in every orbital

Question 4

What’s paramagnetic atom?

Answer 4

Atom with unpaired electrons in a orbital

Question 5

What’s photoelectric effect?

Answer 5

High energy light excites electrons above energy levels associated with the atom itself